An apparatus used only for receiving the sounds generated by underwater objects is called a passive ______ system.
sonar
The correct answer is sonar.
It is used only for receiving and listening to sounds generated by underwater objects (such as submarine engines, ship propellers, or marine life). Why the other options are incorrect: Fluxmeter (Option 1): An instrument used to measure magnetic flux. Fathometer (Option 3): A specific type of active sonar used primarily to measure the depth of water (by sending a signal straight down to the ocean floor). Hydrometer (Option 4): An instrument used to measure the specific gravity (or relative density) of liquids.
Similar Questions
What is the name of the device for measuring some characteristics of a liquid, such as its density or specific gravity?
Name the instrument that is used by meteorologist to measure the solar radiation from the region of the hemisphere of incidence on a flat surface?
Which of the following devices is used for measuring distance?
The instrument used to measure either direct or alternating electric current in amperes is called:
_______ is designed to measure relative humidity.
Important Questions from Measuring Instruments
Microscope is used for the study of which of the following?
Which of the following is the instrument used in submarines to view objects above sea level?
What does a Vernier Caliper measure?
Atmospheric humidity is measured by -
The earthquake waves are recorded by an instrument called:
